title: Paradoxical expiratory ballooning of the hypopharynx in siblings with bilateral choanal atresia.
mesh_terms: D002754:Choanal Atresia; D045853:Exhalation; D006801:Humans; D007013:Hypopharynx; D009296:Nasal Cavity / Q000002:abnormalities*; D035781:Siblings
keywords: NASAL CAVITY/abnormalities